MLA
Artvue Post Card Co. (New York, N.Y.). African American young men holding bow and arrows at Camp Atwater, with others watching in the background. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/95269p8d37-cor.
APA, 6th edition
Artvue Post Card Co. (New York, N.Y.). (unknown)[African American young men holding bow and arrows at Camp Atwater, with others watching in the background]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/95269p8d37-cor.
Chicago
Artvue Post Card Co. (New York, N.Y.), African American young men holding bow and arrows at Camp Atwater, with others watching in the background, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/95269p8d37-cor.